Packing for water-tube boilers.



- No. 815,930. PATBNTED MAR. 20, 1906. .G. RMILLER & J. 'KRONIER.

PAGKING FOR WATER. TUBE BOILERS.

APPLICATION IILEQ D110. 2, 1904. RENEWED FEB. 27.1906.

. 'lfi/hesses' jgw UNITED. STATES PATENT OFFICE.

GUSTAV FRANZ MILLER AND JEAN KRONIER, OF FRANKFORT- ON-THE- 7 MAIN, GERMANY.

Specification of Letters Patent.

Patented. March 20, 190%.

Application filed December 2,1904. Renewed February 27,1906. Serial No. 303.202-

-T aZZ whom it may concern:

Be it-known that we, GUSTAV FRANZ MIL- LER and JEAN KRONIER, subjects of the German Emperor, and residents of Frankfort-onthe- Main, Germany, have invented certain new and useful Improvements in and Relating to Packings for the Chambers of Water-Tube Boilers,.of which the following is a specification.

This invention relates to a packin or stufling for the chambers of water tube oilers Whose chambers consist of separable cylindrical head-pieces.

The essentialfeature of the invention is soft metal, which is placed between the headpieces of the tubes forming'the chambers in a manner that it is not immediately touched by the flame.

On the drawings the packing is. illustrated in combination with a water-tube boiler of a known construction.

. Figure 1 shows a front view, partly in section, through a group of tubes; Fig. 2, a longitudinal section through va tube and its head-pieces. Fig. 3 isa partial ground plan of Fig. 2, while Figs. 4 and 5 show the new packin apart from the rest.

The I) head-pieces b is held together by grapplingirons d between the caps c. For cleaning the diflerent head-pieces it is provided with sto pers '5, which can be screwed out. The hea pieces I) have on the inside of their shell re- 3 5 cesses Fig. 2, into which before being put the cylindrical formation of the packing of.

being covered by cylindrical rings 0 oiler formed by the tubes a and the together cylindrical stuffingsf, Figs. 1, 4, and 5, are placed. These consist of a soft metal for instance, cop erand may have end surfaces of any kind. In the drawings, for instance, they are shown with sloping ends g, 40 which set against the sloping end faces h of the head pieces. On putting together the head pieces the end faces of the stuffing f press a ainst those of the head-pieces b. The rea ti htening, however, is effected by the shell 0 the stuffing f, which under the pressure of the steam is pressed against the shell of the head-pieces b. As the stuffings lie perfectly inside of the head-pieces and, are therefore not within reach ofthe flame, they will last longer than the stuflings now in use.

What we claim as our invention, and desire to secure by United States Letters Patent, is

Packing or stufling for the chambers of water-tube boilers, whose chambers are formed by cylindrical head-pieces joined together, the joints between the difierent headieces f soft metal on the inside of the head-pieces, substantially as and for the-purpose set forth.

In testimony whereof we have signed=our names to'this specification in the. presence of two subscribing witnesses;

GUSTAV FRANZ MILLER.

JEAN KRONIER'. 

